As my girlfriend quarrels with my stepsister, she craves to perform oral sex on me and extract the semen

During a heated argument between my girlfriend and my stepsister, my girlfriend secretly unzipped my pants to take out my big dick and started sucking it. My stepsister caught her and joined in, leading to a wild threesome with my girlfriend expertly handling both my dick and her step-sister\'s. The climax was a double cumshot on their faces.